Date published: 2025-11-2

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TBB (CAS 17374-26-4)

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Alternate Names:
4,5,6,7-tetrabromobenzotriazole; Casein Kinase II Inhibitor I
Application:
TBB is a highly selective CK2α, Dyrk1A, and NS3 viral helicase inhibitor
CAS Number:
17374-26-4
Purity:
≥98%
Molecular Weight:
434.71
Molecular Formula:
C6HBr4N3
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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TBB (4,5,6,7-Tetrabromobenzotriazole) is an organic compound widely employed in diverse scientific research. TBBT possesses a benzotriazole core with four bromine atoms attached to it, rendering it an aromatic compound. Its stability against light and heat degradation makes it an optimal choice for various research endeavors. This crystalline, white solid is a cell-permeable benzotriazolo compound renowned for its capacity to selectively inhibit protein kinases by competitively binding to ATP/GTP-binding sites. Specifically, it demonstrates potent inhibition against casein kinase IIα (CK2α) and dual-specificity tyrosine-(Y)-phosphorylation regulated kinase 1A (Dyrk1A). The strong binding ability of TBB is attributed to both hydrophobic and van der Waals interactions. While it exhibits a lesser extent of inhibition towards kinases such as glycogen synthase kinase (GSK), cyclin-dependent kinase 2 (CDK2), and phosphorylase kinase, it has shown inhibition against NS3-associated viral helicase activities in hepatitis C virus and West Nile virus. Moreover, TBB has been employed as an apoptotic inducer in Jurkat cells. Moreover, it is postulated that TBB acts as an inhibitor of cyclooxygenase (COX) enzymes. COX enzymes participate in the synthesis of prostaglandins, which play roles in processes like inflammation, pain modulation, and other physiological responses. By hindering COX activity, TBB can effectively decrease prostaglandin production, potentially providing therapeutic benefits for specific conditions. Thus, TBB has found utility in numerous in vitro studies investigating its impact on cell growth, differentiation, and immune system function. Its effects on the central nervous system and its potential applications in cancer therapy have also been explored extensively.


TBB (CAS 17374-26-4) References

  1. Selectivity of 4,5,6,7-tetrabromobenzotriazole, an ATP site-directed inhibitor of protein kinase CK2 ('casein kinase-2').  |  Sarno, S., et al. 2001. FEBS Lett. 496: 44-8. PMID: 11343704
  2. Protein kinase CK2 inhibitor 4,5,6,7-tetrabromobenzotriazole (TBB) induces apoptosis and caspase-dependent degradation of haematopoietic lineage cell-specific protein 1 (HS1) in Jurkat cells.  |  Ruzzene, M., et al. 2002. Biochem J. 364: 41-7. PMID: 11988074
  3. Halogenated benzimidazoles and benzotriazoles as inhibitors of the NTPase/helicase activities of hepatitis C and related viruses.  |  Borowski, P., et al. 2003. Eur J Biochem. 270: 1645-53. PMID: 12694177
  4. Selectivity of 4,5,6,7-tetrabromobenzimidazole as an ATP-competitive potent inhibitor of protein kinase CK2 from various sources.  |  Zień, P., et al. 2003. Biochem Biophys Res Commun. 306: 129-33. PMID: 12788077
  5. Biochemical and three-dimensional-structural study of the specific inhibition of protein kinase CK2 by [5-oxo-5,6-dihydroindolo-(1,2-a)quinazolin-7-yl]acetic acid (IQA).  |  Sarno, S., et al. 2003. Biochem J. 374: 639-46. PMID: 12816539
  6. Optimization of protein kinase CK2 inhibitors derived from 4,5,6,7-tetrabromobenzimidazole.  |  Pagano, MA., et al. 2004. J Med Chem. 47: 6239-47. PMID: 15566294
  7. An unbiased evaluation of CK2 inhibitors by chemoproteomics: characterization of inhibitor effects on CK2 and identification of novel inhibitor targets.  |  Duncan, JS., et al. 2008. Mol Cell Proteomics. 7: 1077-88. PMID: 18258654
  8. New inhibitors of protein kinase CK2, analogues of benzimidazole and benzotriazole.  |  Bretner, M., et al. 2008. Mol Cell Biochem. 316: 87-9. PMID: 18548199
  9. Relative role of halogen bonds and hydrophobic interactions in inhibition of human protein kinase CK2α by tetrabromobenzotriazole and some C5-substituted analogues.  |  Wasik, R., et al. 2010. J Phys Chem B. 114: 10601-11. PMID: 20734498
  10. CK2 inhibition induces apoptosis via the ER stress response.  |  Hessenauer, A., et al. 2011. Cell Signal. 23: 145-51. PMID: 20807566
  11. CK2 phosphorylates AP-2α and increases its transcriptional activity.  |  Ren, K., et al. 2011. BMB Rep. 44: 490-5. PMID: 21777522
  12. CK2 activity is required for the interaction of FGF14 with voltage-gated sodium channels and neuronal excitability.  |  Hsu, WC., et al. 2016. FASEB J. 30: 2171-86. PMID: 26917740
  13. CK2 inhibition induced PDK4-AMPK axis regulates metabolic adaptation and survival responses in glioma.  |  Dixit, D., et al. 2016. Exp Cell Res. 344: 132-142. PMID: 27001465
  14. Ebola and Marburg virus VP35 coiled-coil validated as antiviral target by tripartite split-GFP complementation.  |  Zinzula, L., et al. 2022. iScience. 25: 105354. PMID: 36325051
  15. Adsorption of human erythrocyte surface glycoprotein onto polystyrene latex spheres.  |  Fromageot, HP. 1977. J Lab Clin Med. 90: 324-9. PMID: 886218

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

TBB, 10 mg

sc-202830
10 mg
$240.00

TBB, 25 mg

sc-202830A
25 mg
$363.00

TBB, 50 mg

sc-202830C
50 mg
$445.00

TBB, 100 mg

sc-202830B
100 mg
$760.00

TBB, 250 mg

sc-202830D
250 mg
$1781.00